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12 64 12 65 12 66 12 67 12 68 12 69 12 70 12 71 12 72 12 73 12 74 1892 1891 1890 1889 1888 1887 1886 1885 1884 1883

= Free Coordinate    = Occupied(Single Region)     = Occupied (Var Region)     = Center of the grid